REPORT OF THE ASSISTANT ZOOLOGIST 



643 



Zonites multidentatus, Binney. 

 Patula alternata, Say. 

 Patula perspectiva, Say. 

 Patula striatella, Anthony. 

 Strobila labyrinthica, Say. 

 Stenotrema monodon, Racket. 

 Vallonia pulchella, Midler. 

 Triodopsis palliata, Say. 

 Triodopsis appressa, Say. 

 Triodopsis inflecta, Say. 

 Triodopsis tridentata, Say. 

 Mesodon albolabris, Say. 

 Mesodon thyroides, Say. 

 Mesodon Sayii, Binney. 



Pupa muscorum, Li/mwus. 

 Pupa pentodon, Say. 

 Pupa fallax, Say. 

 Pupa curvidens, Gould. 

 Pupa corticaria, Say. 

 Pupa armifera, Say. 

 Vertigo Gouldii, Binney. 

 Vertigo simplex, Gould. 

 Vertigo Bollesiana, Morse. 

 Vertigo ovata, Say. 

 Ferussacia subcylindrica, Linn. 

 Succinea avara, Say. 

 Succinea ovalis, Say. 

 Succinea obliqua, Say. 



Mr. Chas. T. Simpson has reported Unio luteolus and Mr. Aldrich 

 has recorded the other sixteen species of the following list as occurring 

 in the vicinity of Troy. I have never seen specimens of any of these 

 species from this neighborhood and can not confirm the records. 



Unio alatus, Say. (See note 1.) 

 Unio luteolus, Lamarck. (See 



note 4.) 

 Anodonta Benedictii, Lea. 

 Anodonta edentula, Say. (See 



note 9.) 

 Melania elevata, Say. 

 Pleurocera subulare, Lea. 

 Amnicola limosa, Say. 

 Limnaea reflexa, Say. 

 Limnaea ampla, Mighels. 



Limnaea elodes, Say. 



Planorbis campanulatus, Say. 



(See note 14.) 

 Macrocyclis concava, Say. 

 Helix chersioa, Say. 



= Zonites f ulvus, Drapamand. 

 Vitrina limpida, Gould. 

 Helicodiscus lineatus, Say. 

 Mesodon exoletus, Binney. 

 Succinea Totteniana, Lea. 



